Abstract
The conductivity of propped fractures is one of the key factors affecting the effect of shale gas reservoir stimulation. In this paper, the API device was used to test the conductivity of fracture in the laboratory experiments, and the single-factor analysis was obtained from the experiments under different particle sizes of ceramic proppant and quartz sand proppant. Therefore, the influence of closed pressure proppant particle size and sand concentration displacement flow on proppant conductivity was discussed, so as to guide the optimization design of shale gas well volumetric fracturing scheme. The results show that the larger the proppant particle size, the greater the sand paving concentration, the greater the flow rate, the smaller the closure pressure, and the greater the conductivity of a single proppant. In the combined proppant construction, increasing sand intensity or propped fracture width can improve the conductivity of fracture. According to the closure pressure of continental shale gas in Yan ‘an area, the combination of quartz sand proppant with 40–70 mesh as the main, 70–100 mesh and 20–40 mesh as the auxiliary can replace ceramsite in the continental shale gas in Yan’an block.
Copyright 2022, IFEDC Organizing Committee.
This paper was prepared for presentation at the 2022 International Field Exploration and Development Conference in Xi’an, China, 16-18 November 2022.
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Liu, Ab., Zhang, Fs., He, P. (2023). Experimental Study on Influencing Factors of Fracture Conductivity of Continental Shale Gas Reservoir in Yan’An Block. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2022. IFEDC 2022. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-99-1964-2_568
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DOI: https://doi.org/10.1007/978-981-99-1964-2_568
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